SOLVED. Thriller / Murder mystery: mother searching for missing son. [s]

[Anushree]

It's a book about a mother searching for her younger son. The family has the couple, and their elder son whose girlfriend lives with them. The girlfriend is a photographer, a crucial detail in solving the murder is discovered when the mother sees one of her photographs. The younger son likes to do graffiti.

[Ann aka Iftcan]

When did you read this Anushree? Any memory of the cover? Do you think the author was male or female? How did you discover the book? Where is it set--region and country--ex. Small town, U.K.? What do the parents do for work? What does the older brother do, since his girlfriend lives with them? (view spoiler)[Is the girlfriend the killer, or was she just in the right place at the right time to snap the picture that helped solved the murder? (hide spoiler)]

Oh, spoilers are allowed in our group, just warn people that they are coming or hide them the same way that I just did. To know how to do that, right click on the Some HTML is OK at the top right of the comment box on the computer NOT app.

[Anushree]

I read it about two months ago, and the book is narrated by the mother. I don't remember what the older brother does, but the girlfriend stays with them because she comes from a broken and abusive family.
****************
****************
[SPOILER ALERT]
The mother recognises her son's graffiti in one of the photographs at the girl's exhibition. Apparently, the girl didn't want anyone to come to the exhibition at all.
The younger boy started blackmailing the girlfriend because they got intimate once. After this, when the girl was running from him, he got hit by a train at some abandoned train track the girl's father used to work at.

[Kym]

The Missing by C.L. Taylor?

[Anushree]

Yes!!! Thank you so much!! This has brought so much peace to my mind. :)

[Kym]

You’re welcome:)